Provide an option to enable/disable considering space used by .Trash folder for user quota compuation

We have a use case for a large account where /user/user1 has got space quota configured. By default, Trash goes into /user/user1/.Trash. As long as removed files stay back in Trash user will never be able to reclaim the space quota. The customer is looking for a feature that will skip computing space quota for the files in the Trash folder. Proposal is to introduce a new configuration parameter to skip computing quota for Trash files.